Tackles or tight ends?

The speed at the offensive tackle position was one of the biggest revelations of the scouting combine. Arkansas Pine-Bluff offensive left tackle Terron Armstead (above) broke Allen Barbre's offensive line 40-yard dash record with 4.71, continuing his rise on draft boards. While Armstead isn't graded as a first-round prospect, Oklahoma's Lane Johnson and Central Michigan's Eric Fisher are. Johnson is a former quarterback and tight end who ran a 4.72 in the 40-yard dash with a 34-inch vertical leap and a 9-10 broad jump. As Mayock pointed out, Johnson's 40 time matches Ravens wide receiver Anquan Boldin's combine showing along with the same vertical leap as Cincinnati Bengals wide receiver A.J Green and a broad jump that tied New England Patriots running back Stevan Ridley

The speed at the offensive tackle position was one of the biggest revelations of the scouting combine. Arkansas Pine-Bluff offensive left tackle Terron Armstead (above) broke Allen Barbre's offensive line 40-yard dash record with 4.71, continuing his rise on draft boards. While Armstead isn't graded as a first-round prospect, Oklahoma's Lane Johnson and Central Michigan's Eric Fisher are. Johnson is a former quarterback and tight end who ran a 4.72 in the 40-yard dash with a 34-inch vertical leap and a 9-10 broad jump. As Mayock pointed out, Johnson's 40 time matches Ravens wide receiver Anquan Boldin's combine showing along with the same vertical leap as Cincinnati Bengals wide receiver A.J Green and a broad jump that tied New England Patriots running back Stevan Ridley (Brian Spurlock-USA TODAY Sports, USA TODAY Sports)

The speed at the offensive tackle position was one of the biggest revelations of the scouting combine. Arkansas Pine-Bluff offensive left tackle Terron Armstead (above) broke Allen Barbre's offensive line 40-yard dash record with 4.71, continuing his rise on draft boards. While Armstead isn't graded as a first-round prospect, Oklahoma's Lane Johnson and Central Michigan's Eric Fisher are. Johnson is a former quarterback and tight end who ran a 4.72 in the 40-yard dash with a 34-inch vertical leap and a 9-10 broad jump. As Mayock pointed out, Johnson's 40 time matches Ravens wide receiver Anquan Boldin's combine showing along with the same vertical leap as Cincinnati Bengals wide receiver A.J Green and a broad jump that tied New England Patriots running back Stevan RidleyBrian Spurlock-USA TODAY Sports, USA TODAY Sports